120421200401 has 4 divisors (see below), whose sum is σ = 120438846192. Its totient is φ = 120403554612.

The previous prime is 120421200373. The next prime is 120421200433. The reversal of 120421200401 is 104002124021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120421200401 - 2⁶ = 120421200337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120421200401.

It is not an unprimeable number, because it can be changed into a prime (120421203401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8812655 + ... + 8826308.

It is an arithmetic number, because the mean of its divisors is an integer number (30109711548).

Almost surely, 2^120421200401 is an apocalyptic number.

It is an amenable number.

120421200401 is a deficient number, since it is larger than the sum of its proper divisors (17645791).

120421200401 is an equidigital number, since it uses as much as digits as its factorization.

120421200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17645790.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120421200401 its reverse (104002124021), we get a palindrome (224423324422).

The spelling of 120421200401 in words is "one hundred twenty billion, four hundred twenty-one million, two hundred thousand, four hundred one".